Kiddush hashem- Frum Jew returns money to bank he received by mistake

Kiddush Hashem: Orthodox Jew from Kiryas Joel returned today 1000's of $$'s he mistakenly received when cashing a check at a local bank. Mr. Shlomo W. when realizing he got $2,500 for a $25 check called the manager and notified her of the mistake. He also asked not to do anything to the teller who issued the money.